Fast, medium telephoto FX-format portrait lens offers crisp and natural image reproduction for stills and HD video - Designed for use on Nikon's FX-format D-SLR cameras, this updated medium telephoto f/1.8 lens is designed for shooting stills or HD video. The AF-S NIKKOR 85mm f/1.8 features Nikon?s Internal Focus (IF) system providing fast and quiet AF. Its fast aperture is ideal for taking stills or D-Movie HD video in low light or for portraiture where it excels in rendering softly focused backgrounds. When mounted on a DX-format D-SLR, the AF-S NIKKOR 85mm f/1.8 has an effective field of view of 127mm.